function result = G_(t, r, s_)
%G_ This function gets 3 arguments (t,r, s') and returns G(t, r, s')
%   This function implements the following formula:
%   G(t, r, s') = Gn-1(t, r)

% Use global parameter:
global n;

result = Gn(n - 1, t, r, s_);

end